It depends on your use case. For reasoning and French writing quality, Claude Opus 4.7 leads. For multimodal and very long context, Gemini 3 Pro. For value, Claude Sonnet 4.6 or Mistral Large 3 (European, GDPR). For open-source, DeepSeek V3 or Llama 4.
Which AI is GDPR-compliant for a European company?▾
Mistral Large 3 (France-hosted), Mistral Small 3 (open-source, self-hostable), Codestral, and European versions of US models (Claude via Anthropic EU, Gemini via Google Cloud EU). Avoid Grok 4 and most Chinese models for sensitive European data.
Which free AI to use?▾
24 of the 30 models here have a free tier. For daily use: Claude Sonnet 4.6 (claude.ai), GPT-5 (chatgpt.com), Gemini 3 Pro (gemini.google.com). For free self-hosting: DeepSeek V3, Llama 4, Mistral Small 3. Filter by "Free tier" above to see all free models.
What is Arena Elo and how to interpret it?▾
Arena Elo (LMSYS Chatbot Arena) is a score from blind human comparisons between models. Users vote without knowing which model answered. It's one of the most reliable benchmarks because it reflects real human preference. Reference: 1200 = good, 1300 = very good, 1400+ = world-class.
Open-source vs proprietary: which to choose?▾
Open-source if you want: self-hosting, fine-tuning, data control, no vendor lock-in. Proprietary if you want: maximum performance, no infra management, enterprise support. Many organizations use both: proprietary for the frontier, open-source for volume and sensitive data.